Experimental and simulation studies on fatigue behavior of laminated glass having polyvinyl butyral and ethyl vinyl acetate interlayers

摘要

Cyclic fatigue strength (CFS) of laminated glasses (LGs) with different interlayers and their different nominal thicknesses were compared. The effect of interlayer thickness, cyclic bending fatigue load, and interlayer type on CFS is clearly observed from this brief study. It was found that the LG-PVB has comparatively lower CFS than LG-EVA. There is an increment in CFS with an increment in critical interlayer thickness (significantly for an increment from 0.38 to 0.76 mm) in both LG-EVA (prominent) and LG-PVB. The maximum deformation at failure load at the corresponding number of cycles is obtained using the finite element model. The strain-life relations for LG samples were established and shown by surface plots. The results of finite element analysis previously established fracture models were used to explain the fracture patterns of the LG samples. The conclusions of the study are useful for the selection of LG in fatigue prone LG structures.